Mattress-clamp.



R. H. ANDERSON.

MATTRESS CLAMP.

APPLICATION FILED MAR. I7. I9I5.

L23 19469.. A Patented June 26, 1917.

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ROBERT H. ANDERSON, OF SAN DIEGO, CALIFORNIA.

MATTRESS-CLAMP.

Specification of Letters Patent.

Patented June 2G, 191'?.

Application filed March 17, 1915. Serial No. 15,094.

To all whom t may concern.'

Be it known that I, ROBERT H. ANDER- soN, a citizen of the United States, residing in the city of San Diego and county of San 5 Diego, State of California, (whose postoiice address is 1671 Tenth street,) have invented new and useful Improvements in Mattress-Clamps, of which the following is a specication.

This invention relates more particularly to clamps for holding the mattress pad to the mattress frame or bedsteadin folding beds, in which the mattress is ward to the vertical position. Y

l5 Among the objects of this invention are to provide a mattress clamp that will clamp the mattress pad to the mattress frame without injury to the pad;

That will hold the pad in position lwithout concentrating the pressure of the clamp on a too limited area of the pad;

That is simple to install and operate;

That will maintain any desired pressure throughout 'a wide range of adjustment;

and

That may be readily swung out of and into the operative position.

In the one sheet of drawings Figure 1 is a side elevation of a mattress clamp constructed in accordance with this invention as applied to a bedstead, a fragmentary section of which is shown iircross section with a mattress in position.

Fig. 2 is an enlarged fragmentary detail in plan from above of the same.

Fig. 3 is a side elevation partially in cross section of the same taken on the line III-IIL Other objects and advantages will appear as the description progresses. In the draw* ing accompanying and forming part of the present specication, to which like reference characters have been applied, a simple form of putting this invention into practice is shown. I do not wish to be understood as confining this invention to the disclosures made in said drawing and description, as many variations may be introduced, within the spirit of this invention, as defined in the claims succeeding the said description.

In detail the construction illustrated in the drawing includes the bedstead foot frame 1, having the vertical filler rod 2 therein. The side rails 3 extend between the foot and head frames of the bedstead, upon which the mattress frame 4 having folded upthe spring mattress 5 stretched thereon rests. The mattress pad 6 rests upon the mattress 5.

The clamp includes the socket 7 riveted co or otherwise secured to the filler rail 2, centrally located in the foot frame 1 in the type of bed illustrated. The socket 7 may be attached to the mattress frame, in structures wherein the bedstead does not present any convenient means for attaching the sockets 7. The socket 7 is provided with a vertical hole 8 passing therethrough, to receive the vertical stem 9 ofthe clamp arm 10, extending from the socket 7 and overhanging 70 the edge of the mattress 6. The eyelet 11 is formed in the end of the arm 10, that is off Set at 12.

It hai been the practice heretofore to use a clamp constructed substantially as de 75 scribed. The eyelet 11 being forced down against the mattress, sinking into the yielding body thereof, to prevent the mattress (i sliding on the mattress 5, when the bed frame is upended. The sliding lit of the stem 9 within the hole 8, causes the stem 9 to bind on opposite sides of the hole 8, as at 13 and 1li. The lifting tendency of the mattress compressed beneath the eyelet 11, of the outwardly extended arm 10, exerts a leverage causing sufficient friction at the points 13 and 11i, to lock the clamp in its set position. The clamp is released by restoring the stem 9 to a position parallel with the axis of the hole S, which may be done by 9o further depression of the eyelet 11, together with a lifting action on the arm l0; so disposed the stem slides freely in the hole 8 and the clamp may be swung to one side out of the way, with the arm 10 substan- 95 tially parallel with the end of the mattress.

The type of clamp thus far described soon loses its efficiency, owing to the concentrated pressure of the eyelet 11 at the same point on the mattress pad, the mattress stuffing is pushed to one side, forming a pocket into which the clamp sinks deeper and deeper each time, meeting less resistance, until not enough resiliency is exerted beneath the clamp to cause the stem 9 to bind in the hole 105 8; resulting in the mattress slipping from beneath the clamp when the bed is upended,

a great inconvenience. The disadvantages of this form of clampare recognized and in an endeavor to off set them two or three clamps are provided, but even this expedient is insuilicient after the clamps have been in use for any length of time; in addition to the bad effects they have upon the mattress above described.

All of the above disadvantages are eliminated by the addition of the pressure bar 15, iixed within the collar 16 having a reduced neck extending through the eyelet 11 and surmounted by the washer 17, through which the set screw 1S extends and is threaded into the neck, the opposite end of the screw 18 engaging the bar 15, acting las a set screw to hold the bar in its proper' position in the collar 1G. rllhe bar 15 is preferably made of a hard springy wood such as dowel stock, and may be oi' any length. The ends of the bar 15 are surmounted by the ferrules 19, to add a proper iinish and protect the bed clothing from injury 'from the ends of the bar.

The pressure of the bar 15 is distributed across a substantial portion of the width ofthe mattress, the pressure being evenly dis* tributed, does not injure the mattress and because of the length of the bar causes enough of the mattress to bunch up behind it to hold the mattress in the desired position, when the clamp is in operation. The clamp is released as previously described and when it is swung to one side out of the operative position the neck of the collar 16 swivels in the eyelet 11 permitting the bar to lie parallel with the end oi' the mattress beneath its upper edge out of the Way as illustrated in dotted linesin Fig. 2. Metal tubing may be substituted for the wood described for the bar 15.

Any number of clamps may be attached to a single bar in the manner described.

A very effective clamp is produced by duplicating the clamp mechanism at opposite ends of the pressure bar 15. In this manner al]` the advantage of the pressure bar plus the added strength of the extra clamp is attained.

.having a stem engaging said hole; and a pressure bar swiveled on Juheend of said arm. 3. A mattress clamp including la socket having a hole therethrough; an overhanging clamp arm having a stem 'engaging said hole v; an eyelet in the outer end of said arm; and -a pressure bar having a swivel engaging said eyelet.

et. A. mattress clamp including asocket;

an overhanging clamp arm having a stem engaging said socket; an eyelet inthe outer .end of said arm; a collar having a neck swiveled in said eyelet; and a pressure bar fixed in said collar.

5. .A mattress clamp including a socket; an overhanging clamp .arm having a stem engaging said socket; an eyelet in the outer end of said arm; a collar having a neck swiveledin said eyelet, a pressure bar extending through said collar; and a set screw threaded in said neck and engaging said bar.

G. In combination with a bedstead and a mattress, a clamp fixed on said bedstead including a socket; an overhanging clamp arm 'engaging said socket; and a pressure bar. swiveled on the end of said arm and adapted to engage said mattress and means ,for fric- -tionally holding saidV arm in said socket.

In testimony whereof, I have hereunto set my hand this 41th vday of March, 1915.

ROBERT H. ANDERSON. Witnesses:

BALDWIN VALE, RAY L. DAILY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner or Patents. Washington, D. C. 

